These cells
were cultured in complete RPMI1640 medium at 37 °C. For highthroughput
screening, Bel7402 cells were planted in triplicate into
384-well plates (2000 cells/well) and all botanical extracts dissolved
in DMSO (100 μg/ml) were added to the cells. After 24 h, the cells
were fixed and stained with anti-c-Myc and DAPI for immunofluorescent
assay.